LOS ANGELES, California (CNN) -- George Lucas made several changes in "Star Wars" when the film was re-released in 1997. With the "Star Wars" trilogy on DVD, he's tinkered a little more. Here are five changes Lucas made:

5. Jedis don't scream

The 1997 special edition version of "The Empire Strikes Back" was changed so Luke wails as he jumps off the platform in Cloud City. In the only instance of Lucas undoing a later alteration (sadly, it appears that Greedo still shoots first on the DVD of "A New Hope" [ed. note: Lucas says that Greedo still shoots first]), he's taken it off the DVD edition. Maybe he realized Jedis (even ones in training) don't scream.

4. Boba Fett has a new voice

Since Boba Fett is a clone of Jango Fett, and Jango Fett is played by Temura Morrison, doesn't it make sense that he should sound like him, too? That's exactly what George Lucas thought, so Morrison was brought in to revoice the four lines of dialogue (yes, believe it or not there are only four!) Boba spoke in the original trilogy.

3. A new and improved Jabba

Remember that dodgy-looking computer-generated Jabba they inserted into the 1997 re-release of "A New Hope"? Well, he looks a little less dodgy this time around thanks to some improved CGI.

2. The emperor's new clothes

In the original version of "The Empire Strikes Back," the emperor Darth Vader speaks to via hologram was played by a woman in a mask (!) and voiced by Clive Revill. Again, in the interests of consistency, Ian McDiarmid -- who portrays the emperor in "Return of the Jedi" and the prequel trilogy -- now appears in that scene with an added line or two of dialogue.

1. The big finale

The 1997 special edition of "Return of the Jedi" added a few "Star Wars" worlds joining the celebration of the Empire's demise at the end of the film. For the DVD, they've added Naboo, a planet that figures prominently in the prequel trilogy. Also, Anakin Skywalker is noticeably different this time around. When he removes his Darth Vader helmet, he now has no eyebrows! It's probably safe to assume he singes them off in his battle with Obi-Wan Kenobi in next summer's "Revenge of the Sith" and a change had to be made.

But the most noticeable change -- and perhaps one some "Star Wars" diehards will have a tough time stomaching -- is Hayden Christensen (who plays young Anakin in the prequel trilogy) now appearing in the scene where the "force ghosts" of Anakin, Obi Wan, and Yoda smile at Luke. One thing's for sure, there's plenty for fans to debate -- that is, until the trilogy comes out yet again on another format in the future and Mr. Lucas makes his inevitable changes ...